21618400

素因数分解:

$2^5\times 5^2\times {\mathrm{61}}^1\times {\mathrm{443}}^1$

素因数の和:524

約数の個数: 72

約数和(自身を含む): 53762184

約数和(自身を除く): 32143784

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 61, 80, 100, 122, 160, 200, 244, 305, 400, 443, 488, 610, 800, 886, 976, 1220, 1525, 1772, 1952, 2215, 2440, 3050, 3544, 4430, 4880, 6100, 7088, 8860, 9760, 11075, 12200, 14176, 17720, 22150, 24400, 27023, 35440, 44300, 48800, 54046, 70880, 88600, 108092, 135115, 177200, 216184, 270230, 354400, 432368, 540460, 675575, 864736, 1080920, 1351150, 2161840, 2702300, 4323680, 5404600, 10809200, 21618400]

約数ペア:

[(1, 21618400), (2, 10809200), (4, 5404600), (5, 4323680), (8, 2702300), (10, 2161840), (16, 1351150), (20, 1080920), (25, 864736), (32, 675575), (40, 540460), (50, 432368), (61, 354400), (80, 270230), (100, 216184), (122, 177200), (160, 135115), (200, 108092), (244, 88600), (305, 70880), (400, 54046), (443, 48800), (488, 44300), (610, 35440), (800, 27023), (886, 24400), (976, 22150), (1220, 17720), (1525, 14176), (1772, 12200), (1952, 11075), (2215, 9760), (2440, 8860), (3050, 7088), (3544, 6100), (4430, 4880)]